Rendering-kettle.



L. L. Knox. RENDERING KETTLE.

APPLICATION FILED JULY 6| 19H- 1,229,7'58. l Patented June 12, 1917.

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VUNITED STATES PATENT OFFICE,

LUTHERL. KNox, or AvALoN, PENNSYLVANIA.

RENDERING-Kerne.

To ,all whomz't may concern:

Be it known that I, LUTHER L. KNOX, a citizen of the United States, residing at Avalon, inthe county4 of Allegheny and State of Pennsylvania,have invented anew and useful Improvement in Rendering-Kettles, of which the following is a full, clear,

' my invention', the numeral 2 designates an and exact description, reference being had to the accompanying drawings, forming part `of this specification, in which- Figure 1 is a plan View of a rendering kettle embodying my invention; and

Fig. 2 is a central vertical section of the same. i My invention has relation to rendering kettles, such as are used in rendering various oils and lards, etc., and is designed to pro.- vide a kettle of this character of novel construction and capable of being manufactured from sheet metal at a relatively low cost.

Referring to the accompanying drawings, Y

in which I haye shown a kettle embodying outer jacket, which consists of a sheet metal cylinder, open'at the to and bottom, and

secured by riveting or ot erwise at its 4lower end to a supporting base 3, which may be formed by an angle iron bent into annular form.` T he bottom of the jacket is formed of 'a dished sheet metal piece 4, which is welded within the lower portion of the cylinderQ. The inner vessel consists of a cylinder 5, also of sheet metal, butV preferably of somewhat heavier stock than the. outer jacket, and the dished bottom portion 6,'

spun or otherwise shaped from a metal sheet and welded to the lower edge of the cylin- 4 wardly, and this flange is' Welded at 8 t0 the upper edge of the cylinder 2. The inner and outer members of thekettle are separated from each other by a space or 5 tom of the vessel below such outlet. In the construction of the kettle, I preferably lirst .sel up the outer` jacket 2, rlveting it to the buse ring 3, and welding in the bottom 4.

- The two ends of the inner vessel are welded seamless, and is extremely durable and eicient in operation.

I claim:

1. A steam jacketed rendering kettle having inner and outer members, the outer member being formed of a sheet metal cylinder and a sheet metal head, the edge of said head being welded to the inner face of the cylinder tol form a smooth joint at the junction of the cylinder and the head, 'the inner member being formed of a sheet metal cylinder and a sheetmetal head of dished form, vsaid head having an annular flange merging into the dishedV portion, of the head,

specication of Letters Patent. Patent-,ed June 12, 1917, i

Application tiled July 6, 1914. Serial No. 849,044.

there being a butt-Welded joint between the end of the annular flange on the head and the end of the inner cylinder to form a. smooth inner 4surface on the inner member at the junction of the head and cylinder, the upper edge of the cylinder of the inner member having an annular flange supported on and secured to the upper edge of the cylinder of the outer member, substantially as described.

2. A lsteam jacketed'rendering kettle having inner and outer members, the outer member beingformed of a sheet metal cylinder and a sheet metalhead, the ed e of said head being welded to the inner ace of the c linder to form a smooth joint at the 'unction ofthe cylinder and the head-,the inner member being formed of a sheet metal cylinder and a sheet metal head of dished form,

said head having an annular Bange merging into the dished portion ofthe head, there being fa butt-welded joint between the end of the annular flange on the head and the end of the inner cylinder to form a smooth inner surface on the inner member at the junction of the head and cylinder, the up er edge of the cylinder of the inner mem r havingan annularfiange, the annular flange being'ush with the outer face of the cylinder of the outer member and welded to the 'upper edge of said' cylinder to form innerv and 'outer walls, which are unbroken by projectinv anges, substantially. as described. 3. 'steam jacketed rendering kettle having inner and outer members, the outer member bein formed of a sheet metal cylinder and a dlshed sheet metal headz thel edge of said head being welded to the inner surface of the cylinder above the lower end thereof to form a smooth joint at the junction of, the cylinder and head, the cylindrical por'-, tion of the outer member extending below the head .to form a support for the kettle, therel being an annular flange connected to the bottom of the cylinder portion of the outer member to form afoot therefor, the inner member being formed of a sheet metal cylinder and a sheet'metal head of dish'ed form, said head having an annular flange merging into the dished portion of the head,

there being a butt-welded joint between the end of the annular flange on Athe `head and the end' of the mner cylinder to form a smooth inner surface on the inner member .at the junction of the head and cylinder,

the upper edge'of the cylinder of the inner 1` LUTHER L. KNOX.

A Witnesses: GEO. B. BLEMING,

GEO. H. Pammalmnf 

